option

Can jQuery tell if the <option>s of a <select> element are currently displayed? [duplicate]

由 不想你离开。 提交于 2019-12-07 01:45:14
问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Is there a way to determine if a <select> dropdown menu is open? My customer would like me to display some simple instructions once the user interacts with our <select> element in such a way as to cause the <option> list to drop down (or "drop up", I suppose, since some browsers open upwards if there is not much room beneath the <select> box). And then the instructions should disappear again once the user has

Add selected attribute to option in select menu with jQuery

由 你说的曾经没有我的故事 提交于 2019-12-07 00:26:29
问题 I'm making a select menu plugin to replace the ugly default selects and be consistent across different OS. Here's the demo (only firefox and webkit) http://spacirdesigns.com/selectMenu/ It's already working, but I'm having problems assigning the "selected" attribute to the option. The code works with any other attribute but I can't get it to work with the selected attribute. This works: select.find('option') .removeAttr('whatever') .eq(index).attr('whatever', 'hello'); This doesn't: select

Show a text field on a specific option select

由 為{幸葍}努か 提交于 2019-12-07 00:10:54
I'm trying to learn some jQuery and I can't figure it out, how to show a text field (ID-based of course) when I select a specific option in my select tag. I've Google'd for a answer to my problem, but I haven't find anything yet. There for I'm asking you how I can fix this. See below how I want it. As default: Select tag Option 1 Option 2 Option 3 Text field which is hidden by default. If I choose Option 1 , the text field remains hidden. If I choose Option 2 the result is the same as the first one. If I choose Option 3 the text field will be visible. If I choose another option, say Option 2

JQuery的使用案例（二级联动，隔行换色，轮播图，广告插入）

由 你离开我真会死。 提交于 2019-12-06 14:58:48
JQuery的使用案例 （一）利用JQuery完成省市二级联动 第一步：确定事件(change事件),在绑定的函数里面获取用户选择的省份 第二步：创建二维数组来存储省份和城市 第三步：遍历二维数组中的省份(与用户选择的省份进行比较)【使用JQ的遍历操作】 第四步：接着遍历数组中的城市 第五步：创建一个城市文本节点 第六步：创建option元素节点 第七步：将文本节点添加到元素节点中【使用JQ的文档操作方法】 第八步：获取第二个下拉列表并将option元素节点添加进去 第九步：清除第二个下拉列表的option内容 代码实现： <script type="text/javascript" src="../js/jquery-1.8.3.js" ></script> <script> $(function(){ //2.创建二维数组用于存储省份和城市 var cities = new Array(3); cities[0] = new Array("武汉市","黄冈市","襄阳市","荆州市"); cities[1] = new Array("长沙市","郴州市","株洲市","岳阳市"); cities[2] = new Array("石家庄市","邯郸市","廊坊市","保定市"); cities[3] = new Array("郑州市","洛阳市","开封市","安阳市"); $(

jQuery Hide / Show input when selected option is equal to

由 喜你入骨 提交于 2019-12-06 14:08:13
问题 If selected option is equal to 2, I want to add the following line to the body: <input id="fnivel2" pk="1"/> I did it using a hide class. It works but I'm not sure if it is a correct solution: <script> $(document).ready(function (){ $("#fnivel").change(function(){ var selected_option = $('#fnivel').val(); if(selected_option == '2'){ $("#fnivel2").removeClass("hide"); $("#fnivel2").attr('pk','1'); } if(selected_option != '2'){ $("#fnivel2").addClass("hide"); $("#fnivel2").removeAttr('pk'); } }

vue.js :selected doesn't triggering @change event select/option

由 本小妞迷上赌 提交于 2019-12-06 13:27:47
问题 I have prop "cat" props: ['cat1'], Ant this piece of code <select class="form-control" @change="set_category"> <option value="" disabled>Please select category</option> <option v-for="category in categories" :value="category" :selected="cat1 == category.url">{{ category.name}} </option> </select> So this code is called when page its loading and the problem is, that after loading the page option changes but it doesn't triggers @change event, ant because of it i can't actually track which

.NET Core 下 ASP.NET MVC 使用 Elmah 日志组件

由 不羁的心 提交于 2019-12-06 13:11:57
.NET Core 下项目Elmah的配置和Framework下有所区别，总结一下简单使用 1.添加ElmahCore的NuGet包 2.注册Elmah服务 services.AddElmah(); 　　//默认配置 默认配置下：日志在/Elmah路径，如 http://localhost:1996/elmah services.AddElmah(option => { option.Path = "/elm";　　//设置路径 }); Elmah的记录方式有三种： MemoryErrorLog、XmlFileErrorLog、SqlErrorLog，分别是内存记录，文件（XML）记录，数据库记录，以上为内存记录，劣势：一旦应用程序重启，之前记录的信息将会消失，适合测试用。文件记录： 每一个报错日志信息生成一个xml文件， 需要进行一定配置： services.AddElmah<XmlFileErrorLog>(option => //使用泛型的重载Add方法 { string path = Directory.GetParent(Environment.CurrentDirectory).Parent.Parent.FullName; option.Path = "/elm"; option.LogPath = path; //设置存放文件的路径 }); 数据库的还没试过- -

jQuery_插入操作

由 删除回忆录丶 提交于 2019-12-06 10:32:05
jQuery的插入方法有很多，有内部插入，也有外部插入，每个插入方式里面还有很多种，本文一一介绍，注释在代码里，直接上代码： 代码： <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>文档处理_插入操作</title> <script src="js/jquery-1.11.0.min.js" type="text/javascript" charset="utf-8"></script> <script type="text/javascript"> /** * 需求 * 在id=edu下增加<option value="大专">大专</option> */ /** * 方法分析： * 内部插入 * 1.append(content):内部结尾处，将B追加到A里面去 * 2.appendTo(content):内部结尾处，将A追加到B里面去 * 3.prepend(content):内部开始处，将B追加到A里面去 * 4.prependTo(content):内部开始处，将B追加到A里面去 * 外部插入 * 1.after(content):外部，将B追加到A后面 * 2.before(content):外部，将A追加到B前面 * 3.insertAfter(content):外部，将A追加到B后面 * 4

idea修改maven默认配置不生效

由 好久不见. 提交于 2019-12-06 07:58:53
1.问题现象 我的idea版本是2019.2的，通过File->Other Setting->Setting for New Projects修改maven的默认配置后，新建项目maven默认配置不生效 2.解决 打开C:\Users\用户\.IntelliJIdea2019.2\config\options下的project.default.xml，添加一个component，保存，打开idea,File->Other Setting->Setting for New Projects可以看到已经修改了。 <component name="MavenImportPreferences"> 　　<option name="generalSettings"> 　　　　<MavenGeneralSettings> 　　　　<option name="localRepository" value="D:\maven\repository_idea" /> 　　　　<option name="mavenHome" value="D:\maven\apache-maven-3.6.1-idea" /> 　　　　<option name="userSettingsFile" value="D:\maven\apache-maven-3.6.1-idea\conf\settings.xml" /

MySQL Fulltext searching and minimum search term length

由 淺唱寂寞╮ 提交于 2019-12-06 07:25:34
I am using fulltext searching in mysql to search a database of videos I have, however when I search my videos some results will never get returned because the title I am searching for is less than the ft_min_word_len set in MySQL's settings. mysql_query("SELECT MATCH(videoDescription) AGAINST('".$searchString."' IN NATURAL LANGUAGE MODE) FROM videos LIMIT ".$start.",".$end.""); I tried firing up the mysql console to change the setting, however it told me it is read only. The only possible solution I have seen is to have the setting overridden at startup with option files. How do I use option
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